.demo {
  background-color: red;
}
.demo .far {
  border: 1px solid blue;
}
.imgs {
  width: 200px;
  height: 200px;
  background-size: 100%;
  border: 10px solid pink;
}
.react {
  background-image: url('../images/react.jpg');
}
.vue {
  background-image: url('../images/vue.png');
}
